- Give correct revision for nightly builds

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@12660 f25d12d1-65f4-0310-ae8a-bbce733d8d8e

Author: sjoelund

configure.in

@@ -597,7 +597,7 @@ AC_MSG_RESULT([Not compiling with BOOST]); USE_MODPAR=""; BOOSTHOME=""
 
 AC_MSG_CHECKING([for revision])
 SOURCE_REVISION=""
-test -f REVISION && SOURCE_REVISION=`head -n1 REVISION | grep -o @<:@0-9@:>@*`
+test -f REVISION && SOURCE_REVISION=`head -n1 REVISION | grep -o @<:@0-9@:>@@<:@0-9@:>@*`
 test -z "$SOURCE_REVISION" && SOURCE_REVISION=`svn info 2>&1 | grep ^Revision: | cut -d\  -f2`
 test -z "$SOURCE_REVISION" && SOURCE_REVISION="????"